Hydrogen peroxide (H2O2) is a vital chemical used in various industries, but its conventional production process is energy-intensive and not environmentally friendly. Electrosynthesis of H2O2 from the oxygen reduction reaction (ORR) is gaining attention for its potential as a sustainable and low-carbon production method. Researchers have developed an electrochemical reactor using porous solid electrolytes (PSEs) to produce pure H2O2 solutions without salt-based electrolytes, addressing cost and usability challenges. However, the PSE reactor requires further evaluation for stability, scalability, and safety before practical use. Studies aim to understand decay mechanisms, improve performance for scaled-up operations, and optimize reactor design. The development of a modular PSE reactor with increased electrode area is underway to assess its feasibility for niche applications, highlighting ongoing efforts in enhancing sustainable H2O2 production through innovative electrosynthesis technologies.